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CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS (Parenthetical) - CNY (¥)
¥ in Thousands
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS      
Foreign currency translation adjustments, tax ¥ 0 ¥ 0 ¥ 0